Question 1

Which of the following organizations has millions of open-source projects under development?

Accepted Answer

A)   Python Software Foundation
B)   GitHub
C)   The Apache Software Foundation
D)   The Eclipse FoundationE) A) and B)
F) A) and C)

Question 2

Secondary storage information takes much ________ to access than information in primary memory, but its cost per unit is much ________.

Accepted Answer

A)   less time, less
B)   more time, less
C)   less time, more
D)   more time, moreE) B) and D)
F) A) and B)

Question 3

A new class of objects can be created conveniently by inheritance-the new class (called the ________)  starts with the characteristics of an existing class (called the ________) , possibly customizing them and adding unique characteristics of its own.

Accepted Answer

A)   superclass, subclass
B)   hyperclass, subclass
C)   target, superclass
D)   subclass, superclassE) None of the above
F) A) and B) D

Question 4

Which of the following statements is false?

Accepted Answer

A)   Computers can perform calculations and make xe "logical decision"logical decisions phenomenally faster than human beings can.
B)   Computers process xe "data"data under the control of sequences of instructions called computer programs (or simply programs) .
C)   A computer consists of various physical devices referred to as xe "hardware"hardware (such as the xe "keyboard"keyboard, xe "screen"screen, xe "mouse"mouse, xe "solid-state drive"solid-state disks, xe "hard drive"hard disks, memory,
D)   Computing costs are rising dramatically, due to the increasing complexity of hardware and software technologies.E) A) and B)
F) B) and C)

Question 5

Every year or two, the capacities of computers have approximately doubled inexpensively. This remarkable trend often is called ________.

Accepted Answer

A)   the law of large numbers
B)   the principal of least privilege
C)   Moore's law
D)   Wirth's lawE) B) and C)
F) A) and B)

Question 6

Python recently surpassed the programming language xe "R programming language"________ as the most popular data-science programming language.

Accepted Answer

A)   DSPL
B)   Java
C)   C++
D)   RE) A) and B)
F) A) and C)

Question 7

Which of the following statements a) , b)  or c)  is false?

Accepted Answer

A)   Decades ago, most computer applications ran on networked computers.
B)   Today's applications can be written with the aim of communicating among the world's computers via the Internet.
C)   A key intersection between computer science and data science is artificial intelligence.
D)   All of the above statements are true.E) All of the above
F) A) and B) A

Question 8

A xe "gigabytes (GB) "gigabyte is approximately one ________ bytes.

Accepted Answer

A)   thousand
B)   million
C)   billion
D)   trillion.E) A) and B)
F) A) and C)

Question 9

Which of the following statements is false?

Accepted Answer

A)   Software (that is, the Python instructions you write, which are also called code)  controls hardware (that is, computers and related devices) .
B)   Programmers use the Python Standard Library and various other libraries to "reinvent the wheel."
C)   Programmers use libraries to create software xe "object"objects that they interact with to perform significant tasks with modest numbers of instructions.
D)   IPython executes Python instructions interactively and immediately shows their results.E) C) and D)
F) B) and D)

Question 10

Which Python Standard Library module do we use for performance analysis?

Accepted Answer

A)   datetime
B)   time
C)   timeit
D)   sysE) A) and B)
F) C) and D)

Question 11

The most popular database model is the ________ database, in which data is stored in simple tables.

Accepted Answer

A)   network
B)   graph
C)   relational
D)   hierarchicalE) A) and B)
F) All of the above C

Question 12

Which of the following statements is false?

Accepted Answer

A)   Any computer can directly understand only its own machine language, defined by its xe "hardware"hardware design.
B)   The most widely used Python implementation-CPython (which is written in the C programming language for performance) -uses a clever mixture of compilation and interpretation to run programs.
C)   Translator programs called assemblers convert assembly-language programs to machine language at computer speeds.
D)   Interpreter programs, developed to execute high-level language programs directly, avoid the delay of compilation, and run faster than compiled programs.E) All of the above
F) C) and D)

Question 13

Which of the following Python Standard Library modules offers additional data structures beyond lists, tuples, dictionaries and sets?

Accepted Answer

A)   sys and statistics
B)   collections
C)   queue
D)   (b)  and (c) E) A) and D)
F) C) and D)

Question 14

Which of the following popular Python data science libraries are central to machine learning, deep learning and/or reinforcement learning:

Accepted Answer

A)   scikit-learn
B)   keras and tensorflow
C)   OpenAIGym
D)   All of the aboveE) C) and D)
F) B) and D)

Question 15

Which one of the following statements is true?

Accepted Answer

A)   a terabyte is larger than a petabyte.
B)   a kilobyte is exactly 1000 bytes.
C)   a gigabyte is 1024 megabytes.
D)   an exabyte is 1024 zettabytes.E) B) and C)
F) A) and B)

Question 16

Information in the memory unit is ________. It's typically lost when the computer's power is turned off.

Accepted Answer

A)   persistent
B)   constant
C)   sticky
D)   volatileE) A) and C)
F) B) and C)

Question 17

Which logical unit of the computer is the receiving section?

Accepted Answer

A)   input unit
B)   output unit
C)   memory unit
D)   central processing unit.E) A) and B)
F) All of the above

Question 18

Which of the following are reasons why Python is popular and everyone should consider learning it?

Accepted Answer

A)   It's open source, free and widely available with a massive open-source community.
B)   It's easier to learn than languages like C, C++, C# and Java, enabling novices and professional developers to get up to speed quickly.
C)   It's easier to read than many other popular programming languages.
D)   All of the above.E) None of the above
F) A) and D)

Question 19

Which of the following statements about libraries is false?

Accepted Answer

A)   Using existing libraries helps you avoid "reinventing the wheel," thus leveraging your program-development efforts.
B)   Rather than developing lots of original code-a costly and time-consuming process-you can simply create an object of a pre-existing library class, which takes only three Python statements.
C)   Libraries help you perform significant tasks with modest amounts of code.
D)   All of the above statements are false.E) B) and C)
F) A) and B)

Question 20

The popular programming languages Python and ________ are the two most widely used data-science languages.

Accepted Answer

A)   C 
B)   Java
C)   JavaScript 
D)   R E) A) and B)
F) C) and D)

Exam 1: Introduction to Computers and Python

Which of the following organizations has millions of open-source projects under development?

Correct AnswerverifiedShow Answer

Secondary storage information takes much ________ to access than information in primary memory, but its cost per unit is much ________.

Correct AnswerverifiedShow Answer

A new class of objects can be created conveniently by inheritance-the new class (called the ________) starts with the characteristics of an existing class (called the ________) , possibly customizing them and adding unique characteristics of its own.

Correct AnswerverifiedD

Which of the following statements is false?

Correct AnswerverifiedShow Answer

Every year or two, the capacities of computers have approximately doubled inexpensively. This remarkable trend often is called ________.

Correct AnswerverifiedShow Answer

Python recently surpassed the programming language xe "R programming language"________ as the most popular data-science programming language.

Correct AnswerverifiedShow Answer

Which of the following statements a) , b) or c) is false?

Correct AnswerverifiedA

A xe "gigabytes (GB) "gigabyte is approximately one ________ bytes.

Correct AnswerverifiedShow Answer

Which of the following statements is false?

Correct AnswerverifiedShow Answer

Which Python Standard Library module do we use for performance analysis?

Correct AnswerverifiedShow Answer

The most popular database model is the ________ database, in which data is stored in simple tables.

Correct AnswerverifiedC

Which of the following statements is false?

Correct AnswerverifiedShow Answer

Which of the following Python Standard Library modules offers additional data structures beyond lists, tuples, dictionaries and sets?

Correct AnswerverifiedShow Answer

Which of the following popular Python data science libraries are central to machine learning, deep learning and/or reinforcement learning:

Correct AnswerverifiedShow Answer

Which one of the following statements is true?

Correct AnswerverifiedShow Answer

Information in the memory unit is ________. It's typically lost when the computer's power is turned off.

Correct AnswerverifiedShow Answer

Which logical unit of the computer is the receiving section?

Correct AnswerverifiedShow Answer

Which of the following are reasons why Python is popular and everyone should consider learning it?

Correct AnswerverifiedShow Answer

Which of the following statements about libraries is false?

Correct AnswerverifiedShow Answer

The popular programming languages Python and ________ are the two most widely used data-science languages.

Correct AnswerverifiedShow Answer

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D

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